Tire-vulcanizing apparatus



I .Mfiy W WWW E. smsa TIRE VULCANIZING APPARATUS Filed April 14, 1928 2 Sheets-Sheet l Inventor Gemrge E Sease Uzi-ps4 July 16, 1929. s. E. sEAsE TIRE VULGMIIZIKG APPARATUS Filed April 14, 1928 2 Sheets-Sheet '2 Inventor George Sense PM July 16,- 1 929.

PATENT OFFICE."

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a lication fled A ril 14, ms. Serial Ho. 210,041. I

This invention relates to new and useful improvements in tire vulcanizing devices and aims to provide adevice mcludmga pluralityof metallic straps for engagement over the '5 tire arranged upon the form or last together with means for exerting the required pressure upon these straps so that the tll'QWlll be malnv tained in proper engagement with the form or last during the vulca-nizing operation.

An important obJect of this invention resides 11! the provision of means whereby the tire engaging straps may be readily taken oll' of the tire andquiekly associated with or removed from the strap drawing mechanism of II the apparatus.

Afurther and very important object resides in the provision of simple means for drawing the straps into tight engagement with the tire when thesame is arranged upon the form or last.

With theforegoing and other objects in view as the nature of the invention will he ;better understood, the same comprises the novel form. combination and arrangement of parts hereinafter more fully described shown in the accompanying drawings and dlaimed. In the drawings wherein like reference characters indicate corresponding parts "throughout the several views 0 Figure, 1 is a side elevationof my improved vulcanizing apparatus a tire being fragmentarily shown as associated therewith. Figure 2 is a perspective of one of the strap bolts, a i

Figure 3 is a plan view of one end of one of'the straps before the same has been arrangedto accommodate its strap bolt. Figure 4 is a vertical section taken substantially upon the line 44 of-Figure 1.

Figure 5 is a horizontal section taken substantially upon the line 5-5 of the same u e,

'Figure 6 is a fragmentary planview of the strgp plate of the strap drawing mechanism, an

Figure'7 is an enlarged fragmentary horizontal section taken substantially upon the line 7-.7 of Figure 5.

Now having particular reference tothe drawings my novel vulcanizing apparatus consists of an open rectangular frame 5 formed or. equipped at its upper end with a segmental tire receiving form or last 6 adapt- .ed'tobe heated-in any desirable manner and over which the tire A to be vulcanized is arranged; i

Vertically slidahle within the frame ii is a sub-frame 7 including a lower horizontal wall 8 and an upper segmental strap late 9 the opposite longitudinal edges of which-are formed with notches 10. The ends of the horizontal wall 8 as well as the segmental strap plate 9 are notched for retaeivingthe vertical members of the said frame 5 so that the sub-frame 7 will be guided in its vertical sliding movement-within said main frame 5.

- The invention further consists of a pluralityof metallic straps 11 curved to conform to the outer curvature of the tire A, the ends of these straps bcingof reduced width and being bentrearwardly uponthemselves and then secured to the bodies of the straps the bight portions of the bent ends being shaped to provide pin receiving knuckles 12' each knuckle being formed intermediate its ends and at 'the bottom surface thereof with an opening 13-. Arranged within the knuckle of each metallic strap 11 is the cross pin 14 of a T-bolt 15 the shank of which extends through the opening 13 in said strap knuckle as more clearly disclosed in Figure 4. Threaded upon each T-bolt is a notch 16 for'arr'angement beneath the strap plate 9 when the shank of the bolt is arranged within the adjacent notch 10 of said strap plate of the sub-frame 7, see'Figures 1 and 4.

Depending from the form or last 6 are three parallel shafts 17 that project through registering openings in'th'e horizontal wall 8 of the'segmental strap plate 9 of the sub-frame 7 the lowe'rends of the endmost shaft-s 17 being threaded as disclosed in Figures 1 and 7.

Arranged upon the top surface of the hori-f zontal wall 8 of the sub-frame 7 are three in termeshing spur gears 18 through the centers of which extend the shafts 17. The under surfaces of the outermost gears 18 are formed- With angular pockets for receiving similarly shaped nuts. 19 for threaded engagement upon the threaded ends of the outermost shafts 17. V

' Pivotcd to the outermost shaft 17 abovethe middle gear 18 is a hand lever 20 equipped adjacent its inner end with a pivoted dog 21 for engagement with the teeth of. the adjacent gear.

'- i In actual practice the 'straps 11 are arranged loosely over the tire A when the same center strap and ve overlapping engagement with each other as clearly disclosed in.

Figure l. The T-bolts at the ends of these straps are then loosely arranged in the notches 100i the sub-frame stra late 9 after which the lever 20 is actua the middle gear 18 which obviously rotates the endmost gears threading the nuts 19 downwardly u n the threaded ends of the outermost sha ts 17-17 causing the downward movement of the sub-frame 7 and the pulling the entire layer formed by the straps 11 into tight engagement with the tire so as to maintaln the same in close contact with the -form or last 6. Any additional tightening of these straps 11 may be taken care of in turning the nuts 16 inwardly upon the bolts 15. a

It will thus be seen that I have rovided a highly novel, simple and extreme y useiul and efficiently operatin vulcanizing device and even though I have erein shown and described the invention' as consisting of certain detail structural elements, it is nevertheless i raaeea or turning made therein without affecting the spirit and scope of the appended claim.

Having thus described my invention, what vulcanizing apparatus of the i to he understood that some changes may he mental form or last associated with the frame and upon which the tire to be vulcanized is to he arran ed, a plurality of metallic straps adapted to e'arranged over the tirein edge overlap ing relation, means slidably associate with the said frame means whereby said means'may he manually slid in opposite vertical directions within the main frame and detachable connections'between the ends of the straps and said means slidable within said frame, said detachable connections consisting of bolts associated with the ends of the straps upon which are arranged nuts for taking up the individual play in eachstrap and a strap plate ing notches in its op osite ed es for receiving the bolts for moving all 0 the straps inwafiily in unison.

In testimony whereof I afliz; my signature.

eaoaen' EDW N sEAsE;

fitted in said slidable means hav-' 

